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Meniscal allograft transplant

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https://www.readbyqxmd.com/read/29051896/outcomes-and-complication-rates-after-primary-anterior-cruciate-ligament-reconstruction-are-similar-in-younger-and-older-patients
#1
Mark E Cinque, Jorge Chahla, Gilbert Moatshe, Nicholas N DePhillipo, Nicholas I Kennedy, Jonathan A Godin, Robert F LaPrade
BACKGROUND: Until recently, anterior cruciate ligament (ACL) tears in older patients were treated conservatively; however, these patients often experienced significant pain and instability. PURPOSE/HYPOTHESIS: The purpose of this study was to compare the patient-reported outcomes, patient satisfaction, and failure rates of primary ACL reconstruction between a younger (age 20-30 years) and older (age 50-75 years) patient cohort. It was hypothesized that patients in the older cohort could achieve comparable clinical outcomes and retear rates following ACL reconstruction with a bone-tendon-bone autograft or allograft compared with the younger patients...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29023273/return-to-sports-after-athletes-undergo-meniscal-surgery-a-systematic-review
#2
Yong Seuk Lee, O-Sung Lee, Seung Hoon Lee
OBJECTIVE: The aim of this systematic review was to determine the time to and rate of the return to sports (RTS) after meniscal surgery and to compare these values among the different types of meniscal surgeries. STUDY DESIGN: Systematic review. METHODS: The MEDLINE, EMBASE, and Cochrane databases were searched. Studies that met the following criteria were included: (1) English article, (2) full-text available, (3) study on athletes, and (4) primary outcome is RTS after meniscal surgery, such as meniscectomy, meniscal repair, and meniscal allograft transplantation (MAT)...
October 5, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28945482/clinical-outcomes-of-meniscal-allograft-transplantation-with-or-without-other-procedures-a-systematic-review-and-meta-analysis
#3
Bum-Sik Lee, Hyun-Jung Kim, Chang-Rack Lee, Seong-Il Bin, Dae-Hee Lee, Na-Jin Kim, Chang-Wan Kim
BACKGROUND: While additional procedures correcting accompanying pathological conditions can improve the clinical outcomes of meniscal allograft transplantation (MAT), whether those outcomes are comparable or poorer than those of isolated MAT has yet to be clarified. PURPOSE:  To evaluate whether there is a difference in clinical outcomes between isolated MAT and MAT combined with other procedures (combined MAT). STUDY DESIGN: Meta-analysis and systematic review...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28844199/cryopreservation-versus-fresh-frozen-meniscal-allograft-a-biomechanical-comparative-analysis
#4
Shukur Ahmad, Vivek Ajit Singh, Shamsul Iskandar Hussein
Meniscal allograft transplantation may be a better alternative for the treatment of irreparable meniscal injury compared to other forms of treatment. However, it remains to be seen whether the use fresh frozen allograft is better than cryopreserved allograft in treating this type of injury. We hypothesized that cryopreserved meniscal allograft would work better in maintaining the original biomechanical properties compared to fresh frozen ones, due to the lower amount of damage it incurs during the storage process...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28816515/how-should-we-secure-our-transplanted-meniscus-a-meta-analysis
#5
Julio J Jauregui, Zhan Dong Wu, Sean Meredith, Cullen Griffith, Jonathan D Packer, R Frank Henn
BACKGROUND: Meniscal allograft transplant (MAT) is a salvage procedure for young patients with symptomatic meniscal deficiency. Although many studies report good outcomes, MAT remains controversial, and an optimal fixation technique for the meniscus roots is debated. PURPOSE: To assess the overall outcome of MAT and compare the results of different meniscal root fixation techniques. STUDY DESIGN: Meta-analysis. METHODS: Following specific guidelines, we systematically evaluated all current literature for studies reporting on the outcomes of patients who underwent MAT...
August 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28805136/the-ovine-model-for-meniscus-tissue-engineering-considerations-of-anatomy-function-implantation-and-evaluation
#6
Andrzej Brzezinski, Salim A Ghodbane, Jay M Patel, Barbara A Perry, Charles J Gatt, Michael G Dunn
Meniscus injuries represent one of the most-common intra-articular knee injuries. The current treatment options include meniscectomy and allograft transplantation, both with poor long-term outcomes. Therefore, there is a need for regenerative techniques to restore meniscal function. To preclinically test scaffolds for meniscus replacement, large animal models need to be established and standardized. This review establishes the anatomical and compositional similarities between human and sheep menisci and provides guidance for implantation and evaluation of such devices...
September 29, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28765605/the-potential-of-using-semitendinosus-tendon-as-autograft-in-rabbit-meniscus-reconstruction
#7
Chenxi Li, Xiaoqing Hu, Qingyang Meng, Xin Zhang, Jingxian Zhu, Linghui Dai, Jin Cheng, Mingjin Zhong, Weili Shi, Bo Ren, Jiying Zhang, Xin Fu, Xiaoning Duan, Yingfang Ao
Since transplantation of meniscal allograft or artificial menisci is limited by graft sources and a series of adverse events, substitution for meniscus reconstruction still needs to be explored. Natural biomaterials, which can provide a unique 3-D microenvironment, remain a promising alternative for tissue engineering. Among them, autograft is a preferred option for its safety and excellent biocompatibility. In this study, we utilized semitendinosus tendon autograft in meniscus reconstruction to investigate its fibrochondrogenic metaplasticity potential and chondroprotective effect...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28753397/lateral-meniscal-allograft-transplant-via-a-medial-approach-leads-to-less-extrusion
#8
Nam-Hong Choi, Jeong-Ki Choi, Bong-Seok Yang, Doe-Hyun Lee, Brian N Victoroff
BACKGROUND: Accurate positioning of the bony bridge is crucial to prevent extrusion of meniscal allografts after transplant. However, oblique or lateralized placement of the bony bridge of the lateral meniscal allograft may occur due to technical error or a limited visual field. The patellar tendon may be an obstacle to approaching the anterior horn of the lateral meniscus, resulting in a laterally placed allograft. Therefore, lateral meniscal transplant through a medial arthrotomy would be an alternative approach...
October 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28632455/joint-preservation-techniques-in-orthopaedic-surgery
#9
Philip J York, Frank B Wydra, Matthew E Belton, Armando F Vidal
CONTEXT: With increasing life expectancy, there is growing demand for preservation of native articular cartilage to delay joint arthroplasties, especially in younger, active patients. Damage to the hyaline cartilage of a joint has a limited intrinsic capacity to heal. This can lead to accelerated degeneration of the joint and early-onset osteoarthritis. Treatment in the past was limited, however, and surgical treatment options continue to evolve that may allow restoration of the natural biology of the articular cartilage...
June 1, 2017: Sports Health
https://www.readbyqxmd.com/read/28609637/midterm-and-long-term-results-of-medial-versus-lateral-meniscal-allograft-transplantation-a-meta-analysis
#10
Seong-Il Bin, Kyung-Wook Nha, Ji-Young Cheong, Young-Soo Shin
BACKGROUND: It is unclear whether lateral meniscal allograft transplantation (MAT) procedures lead to better clinical outcomes than medial MAT. HYPOTHESIS: The survival rates are similar between medial and lateral MAT, but the clinical outcomes of lateral MAT are better than those of medial MAT at final follow-up. STUDY DESIGN: Meta-analysis. METHODS: In this meta-analysis, we reviewed studies that assessed survival rates in patients who underwent medial or lateral MAT with more than 5 years of follow-up and that used assessments such as pain and Lysholm scores to compare postoperative scores on knee outcome scales...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28580271/meniscal-allograft-transplantation-with-soft-tissue-in-bone-socket-fixation-arthroscopic-technique-with-technical-pearls
#11
Troy A Roberson, Douglas J Wyland
Meniscal allograft transplantation may slow the progression of degenerative changes in the meniscus-deficient knee. The current literature suggests patients can experience good early to mid-term satisfaction and patient-reported outcomes with reasonable expectations of return to work. More ambitious applications in athletes have also shown good results although long-term data are lacking. Traditionally, meniscal allograft transplantation has been considered an open procedure with incorporation of bone blocks from the allograft source...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28580241/lateral-capsular-fixation-an-implant-free-technique-to-prevent-meniscal-allograft-extrusion
#12
Joan C Monllau, Maximiliano Ibañez, Angel Masferrer-Pino, Pablo E Gelber, Juan I Erquicia, Xavier Pelfort
Although several surgical techniques have been described to perform meniscal allograft transplantation with good clinical results and although different methods of capsular stabilization can be found in the literature, there is no standard surgical technique to prevent a common complication in the most of series: the tendency to a radial displacement or extrusion of the transplanted menisci. We present a simple, reproducible, and implant-free technique to perform a lateral capsular fixation (capsulodesis) at the time of only the soft-tissue fixation technique of meniscal allograft transplantation in an effort to reduce or prevent the risk of graft extrusion...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28419808/outcomes-after-1-stage-versus-2-stage-revision-anterior-cruciate-ligament-reconstruction
#13
Justin J Mitchell, Jorge Chahla, Chase S Dean, Mark Cinque, Lauren M Matheny, Robert F LaPrade
BACKGROUND: Revision anterior cruciate ligament reconstruction (ACLR) is becoming increasingly common as the number of primary ACLR cases continues to rise. Despite this, there are limited data on the outcomes of revision ACLR and even less information specifically addressing the differences in 1-stage revision reconstruction versus those performed in a 2-stage fashion after primary reconstruction. PURPOSE: To compare the outcomes, patient satisfaction, and failure rates of 1-stage versus 2-stage revision ACLR...
July 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28351490/high-meniscal-slope-angle-as-a-risk-factor-for-meniscal-allograft-extrusion
#14
P Łuczkiewicz, K Daszkiewicz, J Chróścielewski, W Witkowski, L Kuik
A meniscal graft extrusion is still an unresolved problem that affects most patients after a meniscal transplantation. Despite the advances in surgical techniques, together with the improved methods for a meniscal allograft sizing, success is only observed in up to 75% of patients after they experience a meniscal allograft transplantation. Because a meniscal extrusion is associated with a cartilage deterioration and the progression of osteoarthritis there is a great interest in how to prevent this phenomenon...
April 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28345410/transplantation-of-chemically-processed-decellularized-meniscal-allografts
#15
Kolja Gelse, Ludwig Körber, Martin Schöne, Kay Raum, Peter Koch, Milena Pachowsky, Götz Welsch, Roman Breiter
Objective The aim of this study was to evaluate the chondroprotective effect of chemically decellularized meniscal allografts transplanted into the knee joints of adult merino sheep. Methods Lateral sheep meniscal allografts were chemically processed by a multistep method to yield acellular, sterile grafts. The grafts were transplanted into the knee joints of sheep that were treated by lateral meniscectomy. Joints treated by meniscectomy only and untreated joints served as controls. The joints were analyzed morphologically 6 and 26 weeks after surgery by the macroscopical and histological OARSI (Osteoarthritis Research Society International) score...
April 2017: Cartilage
https://www.readbyqxmd.com/read/28272928/prospective-clinical-and-radiographic-outcomes-after-concomitant-anterior-cruciate-ligament-reconstruction-and-meniscal-allograft-transplantation-at-a-mean-5-year-follow-up
#16
Bryan M Saltzman, Maximilian A Meyer, Alexander E Weber, Sarah G Poland, Adam B Yanke, Brian J Cole
BACKGROUND: Concomitant anterior cruciate ligament reconstruction and meniscal allograft transplantation (ACLR/MAT) has demonstrated short-term success in small, retrospective cohort studies. Patient- and disease-specific predictors of success after ACLR/MAT are largely unknown. PURPOSE: To (1) prospectively evaluate the subjective and objective clinical and radiographic outcomes after ACLR/MAT and (2) conduct a subgroup analysis to identify patient- or disease-related factors that correlate with failure...
March 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28231642/meniscal-transplants-and-scaffolds-a-systematic-review-of-the-literature
#17
REVIEW
Sean Dangelmajer, Filippo Familiari, Roberto Simonetta, Mehmet Kaymakoglu, Gazi Huri
The reported incidence of meniscal tears is approximately 61 per 100,000. In instances where preservation of the native meniscus is no longer a feasible option, meniscal allograft transplantation (MAT) and implants or scaffolds may be considered. The goal of this review was to compare the success and failure rates of two techniques, MAT and meniscal scaffolds, and make an inference which treatment is more preferable at the present time and future. Studies that met inclusion criteria were assessed for technique used, type of transplant used, number of procedures included in the study, mean age of patients, mean follow-up time, number of failures, failure rate, and reported reoperation rate...
March 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28224072/concomitant-arthroscopic-meniscal-allograft-transplantation-and-anterior-cruciate-ligament-reconstruction
#18
Bryan M Saltzman, Justin W Griffin, Nathan Wetters, Maximilian A Meyer, Brian J Cole, Adam B Yanke
In recent decades, arthroscopic meniscal allograft transplantation (MAT) has been refined as a robust option for the treatment of evolving unicompartmental tibiofemoral arthrosis in the setting of meniscal deficiency. It is imperative that the MAT be performed in a knee with anatomic stability and alignment to reduce aberrant biomechanical forces experienced by the allograft tissue to maintain its durability. Thus, in an anterior cruciate ligament (ACL)-deficient knee, ACL reconstruction (ACLR) must be performed to restore the stable knee environment for the MAT to succeed...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28203596/intra-articular-implantation-of-mesenchymal-stem-cells-part-2-a-review-of-the-literature-for-meniscal-regeneration
#19
Matthew J Kraeutler, Justin J Mitchell, Jorge Chahla, Eric C McCarty, Cecilia Pascual-Garrido
Knee osteoarthritis (OA) after partial or total meniscectomy is a prevalent issue that patients must face. Various methods of replacing meniscal tissue have been studied to avoid this progression, including meniscal allograft transplantation, meniscal scaffolds, and synthetic meniscus replacement. Studies have shown that meniscal scaffolds may improve symptoms but have not been shown to prevent progression of OA. Recently, mesenchymal stem cells (MSCs) have been proposed as a possible biological therapy for meniscal regeneration...
January 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28162881/midterm-results-of-osteochondral-allograft-transplantation-to-the-humeral-head
#20
Andrew J Riff, Adam B Yanke, Jason J Shin, Anthony A Romeo, Brian J Cole
BACKGROUND: This study evaluated clinical outcomes of osteochondral allograft (OCA) transplantation for humeral head osteochondral defects. We hypothesized that patients with isolated humeral head disease would achieve favorable results and that patients with bipolar disease would experience inferior outcomes. METHODS: We identified patients who underwent humeral head OCA transplantation. Subjective questionnaire data were obtained preoperatively and at a minimum of 2 years postoperatively...
July 2017: Journal of Shoulder and Elbow Surgery
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